Island



(No Model.)

J. A. WHITMAN.

PUMP.

o. 248,902. Patented Nov. 1,1881.

NNE rates rrica.

JOSIAH A. WHITMAN, OF ORANSTON, RHODE ISLAND.

PUMP.

SPECIFICATION forming part of Letters Patent No. 248,902, dated November1, 1881.

Application filed August 11, 1881.

To all whom it may concern Be it known that I, JOSIAH A.WH11'MAN,acitizen of the United States, residing at- Cran ton, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in Pumps; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to theletters or figures of reference marked thereon, which form a part ofthis specification.

This invention relates to improvements in the construction of pumps, andparticularly that kind patented to me January 8, 1878, numbered 199,131;and it consists in the construction of the parts of a pump, as will befully hereinafter described.

In the drawings, Figure 1 represents a sectional upright view of apump'eylinder or hollowplunger with the valve-box in place. Fig. 2represents a plate of sheet metal, from which the valve-box is formed.Fig. 3 represents a sectional upright view of pump-cylinder andvalve-box with an elongation to receive an induction pipe or hose. Fig.4 represents the valve-box in perspective and removed from the cylinderor plunger, and Fig. 5 represents the mode in use for stopping the valvein its upward reciprocations.

Arepresents the barrelorcylinderofa pump, made-from wrough t-metal pipe,or, where a hollow plunger is used, it would representsuch plunger whenworking in the barrel or cylinder of a pump.

B represents an adjustable and inscrtible valve-box to be inserted inthe cylinder or hollow plunger of a pump. This valve-box is formed intoshape from a single piece of sheetbrass or other tough metal, the formof which, when out from the sheet, is seen at Fig. 5, or it may beformed from metal tubing; but I prefer to form it wholly from a flatpiece of sheet metal, and to have the side walls, I), to form a. chamberfor a ball or other form of free valve, the steps b at the upper edge ofthe box to limit the rise of the valve, the valvc-seat b at the base ot'the box, the inlet-opening b, and a slight enlargement in the diameterof the box is made at b to insure a water-tight fit (No model.)

may be inserted without this enlargement;

but I prefer to have it. A valve-box so made and formed up from a flatpiece of sheet metal, or from wrought-metal tubing, and having theconstruction as above described, is adjustable in the cylinder as thelower valve, or in a hollow plunger of a pump as the upper valve, to anydesired position therein,- and can be removed therefrom at pleasure. Ifother forms than ball-valves are used, the box may be formed without thesteps b. The valve-box, with or without the valve, is kept as an articleof manufacture to be sold without the other parts of the pump, as suchboxes will be made in sizes .to suitthe diameter of the bore of thetubing from which the pump cylinder or plunger is made.

0 represents a free ball-valve placed within the box B, and enough lessin diameter than the bore of the box to admit the proper quantity ofwater to pass by it and freely reciprocate therein, and is limited inits reciprocations by the stops 1) at the top of the box, which, being apart of the same piece of metal, are bent inward toward each other andprevent the valve from rising higher than is nec essary. These stopsobviate the necessity of boring or drilling holes in the cylinder orplunger of the pump, to insert a stop-pin to limit the rise of thevalve, and, being less in width than the inner diameter of the box, giveample space for the passage of the water through the box. Other forms ofvalves than balls may be used in this box, as it only requires the shapeof the bearing of the valve to be known to produce a seat to fit thevalve.

In some cases it is desirable to form the lower end of the valve-box toattach an inductionpipe thereto, and when thatis the case box B iselongated or extended below the valve-scat; and contracted to have thesame diameter of opening as the inlet-opening in the valve-scat, as seenat c in Fig. 3, to form the part. c to receive the hose 0. The box forthis purpose, with the hose-connection, is made from a single piece ofmetal tubing struck up into the shape desired.

Whenever the valve'box is greater in diameter than the cylinder orplunger of a pump the cylinder or plunger can easily be expanded to thediameter that will receive the box under v suitable pressure, or suchpressure as will in- 5 sure a tight joint between the box and cylinder,and to such height as may be desirable above the bottom of the cylinderor plunger. Having thus described my invention, what I claim, and desireto secure by Letters Patcut, is-

1. An adjustable and insertible valve-box, B, made from a singlepiece ofmetal, and having the valve-chamber within the walls I), valveseat b,andinlet-opening b, substantially as r and for the purposes described.

2. An adjustable and insertible valve-box, B, made from a single pieceof metal, and having the valve-chamber within the walls I), valveseat b,valve-stops b, and inlet-opening b, substantially as and for thepurposes described. 3. A pump-valve box, B, made from a single piece ofmetal, having valve-chamber within the walls b,yalve-seat b stops b",inlet-opening b, and enlarged part b, as and for the purposes described.

substantially as described.

4. A pump-valve box constructed, as above described, from a single pieceof metal, adapted to be used with the cylinder or hollow plunger of apump, substantially as described.

5 A pump-valve be: formed from a single 0 piece of metal, having achamber for a free valve, stops to limit the rise of the valve, avalve-seat, an inlet-opening, and a contracted portion, 0, to receivethe induction-pipe c thereon, as and for the purposes described.

6. .As an article of manufacture, a pumpvalve box having a chamber forthe valve, the valve-seat, the inlet-opening, the valve stops, and thepart to receive the induction-pipe,

7. As an article of manufacture, a pumpvalve box having a chamber for avalve, a valve-seat, an inlet-opening, and a valvestop, substantially asdescribed.

In testimony whereof I aflix my signature 5 in presence of twowitnesses.

JOSIAH A. WHITMAN.

Witnesses: v

HENRY WHITMAN, J 01m J. BUCKLEY.

